We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Ozone Transport‐Radiation Feedbacks in the Tropical Tropopause Layer.
- Authors
Charlesworth, Edward J.; Birner, Thomas; Albers, John R.
- Abstract
The tropical tropopause layer (TTL) temperature balance is of considerable interest for its control over the amount of water entering the stratosphere. The upwelling branch of the Brewer‐Dobson circulation (BDC) directly affects these temperatures through adiabatic cooling. BDC upwelling also indirectly affects TTL temperatures through the influence of ozone transport on radiative heating. We investigate this latter feedback using a single‐column radiative‐convective equilibrium model coupled with a model of simplified stratospheric ozone chemistry and vertical transport. We find that BDC ozone transport is of first‐order importance for TTL temperatures. Additionally, we estimate the effect of ozone transport on cold point tropopause temperature responses to changes in upwelling. We find that the feedback is responsible for approximately 20% of the response to perturbations on time scales longer than about half a year but that this contribution can be neglected for time scales shorter than about a week. Key Points: Interactive ozone chemistry is applied in a single‐column radiative‐convective equilibrium model to investigate transport processesOzone transport by Brewer‐Dobson circulation upwelling is of first‐order importance for temperature structure of tropical tropopause layerTransport‐radiation feedback: increased (decreased) upwelling reduces (increases) ozone −20% of the total cooling (warming) from upwelling
- Subjects
OZONE layer; TROPOPAUSE; ATMOSPHERIC temperature; UPWELLING (Oceanography); ATMOSPHERIC circulation
- Publication
Geophysical Research Letters, 2019, Vol 46, Issue 23, p14195
- ISSN
0094-8276
- Publication type
Article
- DOI
10.1029/2019GL084679